Commit 89d7da9b authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by David Sterba
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btrfs: get mapping tree directly from fsinfo in find_first_block_group 



We already have an fs_info in our function parameters, there's no need
to do the maths again and get fs_info from the extent_root just to get
the mapping_tree.

Instead directly grab the mapping_tree from fs_info.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 96f9b0f2

fs/btrfs/block-group.c

+1 −1
Original line number Diff line number Diff line
@@ -1566,7 +1566,7 @@ static int find_first_block_group(struct btrfs_fs_info *fs_info, 
			struct extent_map_tree *em_tree;

			struct extent_map *em;



			em_tree = &root->fs_info->mapping_tree;

			em_tree = &fs_info->mapping_tree;

			read_lock(&em_tree->lock);

			em = lookup_extent_mapping(em_tree, found_key.objectid,

						   found_key.offset);